Let's consider all this election thing for minute.
God showed "grace" to man by sending Jesus to this earth.
Therefore, in that regard, it is God that allows one into heaven or not. Man has nothing to do with Grace. Grace is like God opening the door so that man may enter.
But....
God also created man and gave man a "free will" in that man can choose to enter the door of Grace or not. And as I read the bible, God never took the "free will" from man.
So while God opened the door of heaven through "grace", man has the right to accept that door or not, because of man's free will.
And while God wants everyone to go to heaven, it is man that chooses to go or not to go. God doesn't make that choice. It is not God's fault if someone doesn't go to heaven.
How does man choose to go to heaven.... simple.... by doing what Jesus wants, and doing it the way Jesus wants it done.
Which brings me back to this "election" idea....
God give grace...
But man, because of his free will, must choose to accept that grace.
Thus the election is a two part process.... God's and man's.